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[Coronary bypass surgery in patients with decreased function of the left ventricle]
P S Olsen1, E Kassis, U Niebuhr-Jørgensen
1Thoraxkirurgisk afdeling R og kardiologisk laboratorium, København Amts Sygehus i Gentofte.
Insights
Coronary artery bypass surgery improved heart function and working capacity in patients with poor left ventricular function. This surgery offers significant symptomatic and functional benefits for ischemic heart disease patients.
Area of Science:
- Cardiology
- Cardiac Surgery
- Heart Failure Research
Context:
- Patients with ischemic heart disease often present with impaired left ventricular function.
- Coronary artery bypass surgery is a common intervention for severe coronary artery disease.
Purpose:
- To evaluate the efficacy of coronary artery bypass surgery in patients with poor left ventricular function.
- To assess the impact of surgery on ejection fraction and working capacity.
Summary:
- Twenty-one patients with poor left ventricular ejection fraction (LVEF) underwent coronary artery bypass surgery.
- Perioperative mortality was 9.5%, with a 1-year survival rate of 90%.
- Postoperative LVEF improved from 23% to 35%, and 70% of patients experienced increased working capacity.
Impact:
- Coronary artery bypass surgery can lead to significant symptomatic and functional improvements in patients with compromised left ventricular function.
- The findings support surgical intervention for selected patients with ischemic heart disease and reduced ejection fraction.
Abstract:
During 1988-1990, 21 patients with poor left ventricular function underwent coronary artery bypass surgery. The median number of previous infarctions was 1.6 (0-4). Three patients had no previous history of myocardial infarction. All patients had ischemic heart disease and significant stenoses or occlusion of the circumflex artery, the left anterior descendent artery and the right coronary artery. Preoperatively the left ventricular ejection fraction (LVEF) was 23% (10-28) judged by echocardiography. The median number of peripheral anastomoses was 4.8 (2-7). The perioperative mortality was 9.5%. One year survival was 90%. Postoperatively the median LVEF increased to 35% (25-50). The working capacity increased in 70% of the patients. This study has shown that coronary arterial bypass surgery in patients with ischemic heart disease and poor left ventricular function may result in symptomatic and functional benefit.